#include <stdio.h>
main()
{
    int number , i, j, k, l;
    printf("Please enter a number=");
    scanf("%d",&number);
    for (i=1;i<=number/2;i++)
      for (j=0;j<=i;j++)
        for (k=0;k<=j;k++)
          for (l=0;l<=k;l++)
            if ( number==i*i+j*j+k*k+l*l )
            {
                printf(" %d=%d*%d+%d*%d+%d*%d+%d*%d\n",number,i,i,j,j,k,k,l,l);
                exit(0);
            }
}